I'm a big fan of spring for the $200, custom fit, silicone ear plugs, cause quite frankly, what's your hearing worth? Gets rid of a huge portion of the unwanted noise, makes hearing what you need to a snap, and you have to run the Raceceiver at it's lowest setting, as it's crystal clear. On top of that, you don't need duck tape to hold them in place. My favorite supplier is Dawn from Ear Everything: http://www.eareverything.com/

Bill